Claim Missing Document
Check
Articles

Found 26 Documents
Search

Effect of Paclobutrazol Concentration and Urea Fertilizer Dosage on Plant Growth and Yield Long Beans (Vigna sinensis L.) Djarwatiningsih Djarwatiningsih; Agus Sulistyono; Novita Dyah Safitri
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 13, No 3 (2024): September 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i3.650-661

Abstract

Long bean is a well-known horticultural commodity in people's lives with quite high nutritional value. This study aims to determine the effect of paclobutrazol concentrations and doses of Urea fertilizer on the growth and yield of long bean plants. Long bean plants were planted on private cultivation land in Werungotok Village, Nganjuk District, Nganjuk Regency, East Java in January 2023 – April 2023. The study was structured using a Split Plot Design with 2 factors, including concentration of paclobutrazol and the dose of Urea fertilizer. Each factor consisted of 4 levels and was repeated 3 times. The results revealed that the concentration of paclobutrazol and the dose of urea fertilizer had an effect on plant length, number of leaves, age of flower emergence, number of flowers, number of fruits, fruit weight per plant, fruit weight per plot, fruit weight per hectare, fruit length and fruit set. The best results were obtained from the treatment with a concentration of 150 ppm paclobutrazol and a dose of 100 kg/ha of urea. Keywords:  Growth,  Paclobutrazol concentration,  Urea dose, Yield.   
PENGARUH KONSENTRASI DAN FREKUENSI PEMBERIAN PACLOBUTRAZOL TERHADAP PERTUMBUHAN AWAL BIBIT KELENGKENG (Dimocarpus longan L.) Sofiana, Elvira Dhea; Sulistyono, Agus; Moeljani, Ida Retno
Jurnal Ilmu Pertanian Tirtayasa Vol 5, No 2 (2023)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33512/jipt.v5i2.22717

Abstract

AbstrakKelengkeng (Dimocarpus longan L.) merupakan komoditas buah-buahan yang memiliki keunggulan nilai ekonomi tinggi. Persediaan batang bawah sedikit dilakukan karena membutuhkan waktu yang lama. Penelitian ini bertujuan untuk mengetahui pengaruh konsentrasi dan frekuensi pemberian paclobutrazol terhadap pertumbuhan awal bibit kelengkeng. Penelitian dilakukan di greenhouse Fakultas Pertanian Universitas Pembangunan Nasional “Veteran” Jawa Timur pada bulan April sampai Juli 2023. Penelitian disusun dengan menggunakan Rancangan Acak Lengkap (RAL) dengan 2 faktor. Faktor pertama konsentrasi paclobutrazol dengan 5 taraf, faktor kedua frekuensi pemberian paclobutrazol dengan 3 taraf. Kedua kombinasi diulang sebanyak 3 kali. Hasil penelitian menunjukkan adanya pengaruh interaksi konsentrasi dan frekuensi pemberian pada tinggi bibit. Hasil terbaik diperoleh dari perlakuan kombinasi konsentrasi paclobutrazol 150 ppm dan frekuensi pemberian 2 kali. Kata Kunci: batang bawah, frekuensi paclobutrazol, kelengkeng, konsentrasi paclobutrazolAbstractLongan (Dimocarpus longan L.) is a fruit commodity that has the advantage of high economic value. Stockpile supply is little done because it takes a long time. This study aims to determine the effect of concentration and frequency of paclobutrazol administration on the early growth of longan seedlings. The research was conducted in the greenhouse of the Faculty of Agriculture, Universitas Pembangunan Nasional "Veteran" East Java from April to July 2023. The study was prepared using a Complete Randomized Design (RAL) with 2 factors. The first factor is the concentration of paclobutrazol with  5 levels, the second factor is the frequency of paclobutrazol administration with 3 levels. Both combinations are repeated 3 times. The results showed the influence of the interaction of concentration and frequency of administration on the height of seedlings. The best results were obtained from a combination treatment of paclobutrazol concentration of  150 ppm and frequency of administration 2 timesKeywords: longan, paclobutrazol concentration, paclobutrazol administration frequency, rootstock
The Effect of Paclobutrazol and Types of Nitrogen (N) Fertilizer on The Growth and Yield of Long Bean (Vigna sinensis L.) Nirmala Aulia Sari; Ida Retno Moeldjani; Agus Sulistyono
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 13, No 3 (2024): September 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i3.933-940

Abstract

Long bean is the one of the most widely consumed vegetables both fresh and processed. The market demand for long beans is rising, but their production remains limited. This study aims to investigate how different concentrations of paclobutrazol and various types of nitrogen fertilizers affect the growth and yield of long bean plants. The research was conducted in Dander Village, Dander District, Bojonegoro Regency, East Java. The study employed a factorial Randomized Block Design (RBD) with two factors: the concentration of paclobutrazol (P0 = control, P1 = 150 ppm, P2 = 200 ppm, P3 = 250 ppm) and the type of nitrogen fertilizer (N0 = NPK control, N1 = Urea, N2 = ZA, N3 = KNO3). Variables to observed included plant length, number of leaves, flowering age, number of pods, pod weight, number of seeds, and fruit set. The results showed that the combination of 150 ppm paclobutrazol and KNO3 nitrogen fertilizer produced the best results in terms of the fastest flower emergence at 29 days after planting (HST) and the highest pod weight of long beans at 43.00 grams per plant. Keywords: Paclobutrazol, Various Nitrogen Fertilizers, Growth, Yield, Long Beans (Vigna sinensis L.)
Effect of Concentration and Frequency of Paclobutrazol Application on Growth and Yield of Shallot Alia Dewi Palupi; Agus Sulistyono; Nova Triani
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 14, No 2 (2025): April 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v14i2.666-676

Abstract

Shallot is a horticultural commodity that is always needed for consumption and has high economic value. However, shallot production in East Java has decreased due to the low quality and quantity of shallot seeds. This study aims to determine the effect of concentration and frequency of paclobutrazol application on the growth and yield of shallot. This research was conducted in Sambigede Village, Sumber Pucung Subdistrict, Malang Regency in January-May 2024. The research was arranged using a Split Plot Design with 3 replication. The main plots were paclobutrazol concentrations: 50 ppm, 100 ppm, 150 ppm, and 200 ppm. The subplots were the frequency of paclobutrazol application: 1 time, 2 times, and 3 times. The combination of paclobutrazol concentration of 100 ppm and application frequency of 1 time gave the best results in inhibiting the vegetative phase, increasing tuber dry weight per clump, harvest index, and chlorophyll content. The frequency of paclobutrazol application did not significantly affect the fresh weight of tubers per clump, fresh weight of tubers per plot and dry weight of tubers per plot, but paclobutrazol concentration of 100 ppm affected the fresh weight of tubers per clump. Keywords: Bulbs, Harvest, Paclobutrazol, Shallot, Vegetative.
Effects of Leaf Pruning and Nitrogen Fertilizer Application on the Growth and Yield of Sweet Corn (Zea mays saccharata Sturt) Riska Widiya Puteri; Didik Utomo Pribadi; Agus Sulistyono
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 14, No 3 (2025): June 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v14i3.781-788

Abstract

Sweet corn production in Indonesia is relatively low due to instability and many factors, including infestation of pests and diseases, inappropriate and inefficient cultivation techniques, and the varieties. Pruning the leaves below the cob and applying nitrogen fertilizer may improve yield. The aim of this research was to investigate the combined effect of leaf pruning and types of nitrogen fertilizer on the growth and yield of sweet corn plants. A plot experiment was performed in a Randomized Block Design with 2 factors, namely leaf pruning (no pruning, 1 leaf remaining, 2 leaves remaining, and 3 leaves remaining below the cob), and types of N fertilizer (Urea 4.5 g/plant, ZA fertilizer 9.6 g/plant, and KNO3 fertilizer 15.5 g/plant). Results showed that the best type of N source was KNO3 fertilizer with fresh weight of dehusked cobs (217.68 g), cob diameter (44.84mm), and sugar content (16.26%). Combination treatment of KNO3 fertilizer and the 3 leaves remaining provided the best results on the parameters of fresh weight of husked cobs (308.50 g), cob length (18.83 cm), weight of husked cobs (10.12 kg/plot), and yield of husked cobs (28.11 ton/ha). Keywords: Cultivation, Fertilizer, Nitrogen, Productivity, Sweet corn.
The Effect of KNO3 Fertilizer Dosage and Paclobutrazol Concentration on The Growth and Yield of Long Bean (Vigna sinensis L.) Sintha Dayu Aringgani; Djarwatiningsih Djarwatiningsih; Agus Sulistyono
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 14, No 1 (2025): February 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v14i1.273-282

Abstract

Long bean production has decreased in Indonesia due to uncertain seasonal factors, such as long dry seasons and short rainy seasons. Long bean production has decreased due to inappropriate and optimal cultivation techniques. Several efforts can be made to overcome the problem of decreasing long bean productivity by fertilizing and applying growth regulators. The aim of this research is to understand the combined effect of KNO₃ fertilizer doses and paclobutrazol concentrations on the growth and yield of long bean plants. Thise research was conducted in Ketawang Village, Nganjuk, East Java. The research was a factorial experiment with Split Plot Design consisted of two treatment levels, namely KNO₃ fertilizer dose (0 g/plant, 8 g/plant, 10 g/plant and 12 g/plant) and paclobutrazol concentration (0 ppm, 150 ppm, 175 ppm and 200 ppm). The combination of 10 g/plant KNO₃ + 150 ppm paclobutrazol influences the growth and yield of long bean plants, however the application of KNO₃ fertilizer alone has no effect on the growth and yield of long bean plants. Keywords: Giberelin, Growth regulator, Harvest, Nutrient, Retardant.